Planning for the weather is a good way to make your trip to Bayubay Sur relaxing and enjoyable, especially when you're splurging. The hottest months are usually May and April with an average temp of 82°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Bayubay Sur are August, July, June, and September, with each month seeing an average of 23 inches of rainfall.